Probably depends on the individual way you broke them, but when I broke 3 ribs, I was back in the saddle a week and a half later. It hurt most to mount and dismount. Riding itself wasn’t much worse than general except in those two activities. I did have a rib belt on, which did help.
By far the worst moment of each day, and unfortunately unavoidable, was getting out of bed. :sadsmile: Close second goes to coughing.
Within 6 weeks, I was no longer aware of them all the time and doing things pretty well, but I’d still get a sharp twinge at moments if I moved wrong. Several months to not having any pain at all from them.
Good luck.